Upon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.Efficient muscle contraction depends on the motor units within a muscle working effectively together.pon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.
Trojan programs are most dangerous because they can create a back door. into your computer that gives malicious hackers direct access to your. system. Once installed, Trojans can hijack your PC and upload usernames, passwords, credit card numbers, social security numbers, and bank account.
A computer worm is a self-replicating computer program that penetrates an operating system with the intent of spreading malicious code.Worms utilize networks to send copies of the original code to other computers, causing harm by consuming bandwidth or possibly deleting files or sending documents via email.Worms can also install backdoors on computers. Worms are often confused with computer viruses; the difference lies in how they spread.Computer worms self-replicate and spread across networks, exploiting vulnerabilities, automatically; that is, they donât need a cybercriminalâs guidance, nor do they need to latch onto another computer program.orms utilize networks to send copies of the original code to other computers, causing harm by consuming bandwidth or possibly deleting files or sending documents via email. Worms can also install backdoors on computers. Worms are often confused with computer viruses; the difference lies in how they spread.